Which is the main reason cells are replaced in the body?

due to old age or injury

Explanation:

Each cell within the body has its own life cycle during which they become old and damaged. Such cells will be replaced in the body by younger cells that are produced during cell division.

Old or damaged cells are replaced by new cell through the process of mitosis.

Therefore, the main reason cells are replaced in the body is due to old age or death/damage of cells.

answer: angiosperms

dicots

angiosperms are highly evolved plants, they produce seeds which are enclosed within in a carple. these are the largest group of plants on earth. they include trees, shrubs, herbs and small flowering plants. angiosperms exhibit a flowering stage in their life cycle. the flower serves the function of reproduction and fruit formation in majority of angiosperms. dicot is the term used to describe flowering plants that have two seed leaves. dicots are plants which develop seeds which split into two parts called cotyledons. each cotyledon contains one embryo.

here, a small purple flower development indicates that the plant belongs to angiosperms and having two embryonic leaves indicates it belongs to dicots.  

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